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115 lines
3.4 KiB
C
115 lines
3.4 KiB
C
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/* @(#)intcvt.h 1.8 13/10/26 Copyright 1986-2013 J. Schilling */
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/*
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* Definitions for conversion to/from integer data types of various size.
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*
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* Copyright (c) 1986-2013 J. Schilling
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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* A copy of the CDDL is also available via the Internet at
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* http://www.opensource.org/licenses/cddl1.txt
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#ifndef _SCHILY_INTCVT_H
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#define _SCHILY_INTCVT_H
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#ifndef _SCHILY_MCONFIG_H
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#include <schily/mconfig.h>
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#endif
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#ifndef _SCHILY_UTYPES_H
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#include <schily/utypes.h>
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#endif
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#define i_to_2_byte(a, i) (((Uchar *)(a))[0] = ((i) >> 8) & 0xFF,\
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((Uchar *)(a))[1] = (i) & 0xFF)
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#define i_to_3_byte(a, i) (((Uchar *)(a))[0] = ((i) >> 16)& 0xFF,\
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((Uchar *)(a))[1] = ((i) >> 8) & 0xFF,\
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((Uchar *)(a))[2] = (i) & 0xFF)
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#define i_to_4_byte(a, i) (((Uchar *)(a))[0] = ((i) >> 24)& 0xFF,\
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((Uchar *)(a))[1] = ((i) >> 16)& 0xFF,\
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((Uchar *)(a))[2] = ((i) >> 8) & 0xFF,\
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((Uchar *)(a))[3] = (i) & 0xFF)
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#define a_to_byte(a) (((Int8_t *)a)[0])
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#define a_to_u_byte(a) ((UInt8_t) \
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(((Uchar *)a)[0] & 0xFF))
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#define a_to_u_2_byte(a) ((UInt16_t) \
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((((Uchar *)a)[1] & 0xFF) | \
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(((Uchar *)a)[0] << 8 & 0xFF00)))
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#define a_to_2_byte(a) (int)(Int16_t)a_to_u_2_byte(a)
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#define a_to_u_3_byte(a) ((Ulong) \
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((((Uchar *)a)[2] & 0xFF) | \
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(((Uchar *)a)[1] << 8 & 0xFF00) | \
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(((Uchar *)a)[0] << 16 & 0xFF0000)))
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#define a_to_3_byte(a) a_to_u_3_byte(a) /* XXX signed version? */
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#ifdef __STDC__
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# define __TOP_4BYTE 0xFF000000UL
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#else
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# define __TOP_4BYTE 0xFF000000
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#endif
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#define a_to_u_4_byte(a) ((Ulong) \
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((((Uchar*)a)[3] & 0xFF) | \
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(((Uchar*)a)[2] << 8 & 0xFF00) | \
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(((Uchar*)a)[1] << 16 & 0xFF0000) | \
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(((Uchar*)a)[0] << 24 & __TOP_4BYTE)))
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#define a_to_4_byte(a) (long)(Int32_t)a_to_u_4_byte(a)
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/*
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* Little Endian versions of above macros
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*/
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#define li_to_2_byte(a, i) (((Uchar *)(a))[1] = ((i) >> 8) & 0xFF,\
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((Uchar *)(a))[0] = (i) & 0xFF)
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#define li_to_3_byte(a, i) (((Uchar *)(a))[2] = ((i) >> 16)& 0xFF,\
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((Uchar *)(a))[1] = ((i) >> 8) & 0xFF,\
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((Uchar *)(a))[0] = (i) & 0xFF)
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#define li_to_4_byte(a, i) (((Uchar *)(a))[3] = ((i) >> 24)& 0xFF,\
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((Uchar *)(a))[2] = ((i) >> 16)& 0xFF,\
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((Uchar *)(a))[1] = ((i) >> 8) & 0xFF,\
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((Uchar *)(a))[0] = (i) & 0xFF)
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#define la_to_u_2_byte(a) ((UInt16_t) \
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((((Uchar*)a)[0] & 0xFF) | \
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(((Uchar*)a)[1] << 8 & 0xFF00)))
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#define la_to_2_byte(a) (int)(Int16_t)la_to_u_2_byte(a)
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#define la_to_u_3_byte(a) ((Ulong) \
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((((Uchar*)a)[0] & 0xFF) | \
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(((Uchar*)a)[1] << 8 & 0xFF00) | \
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(((Uchar*)a)[2] << 16 & 0xFF0000)))
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#define la_to_3_byte(a) la_to_u_3_byte(a) /* XXX signed version? */
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#define la_to_u_4_byte(a) ((Ulong) \
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((((Uchar*)a)[0] & 0xFF) | \
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(((Uchar*)a)[1] << 8 & 0xFF00) | \
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(((Uchar*)a)[2] << 16 & 0xFF0000) | \
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(((Uchar*)a)[3] << 24 & __TOP_4BYTE)))
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#define la_to_4_byte(a) (long)(Int32_t)la_to_u_4_byte(a)
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#endif /* _SCHILY_INTCVT_H */
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